John woodwabd and eobeet anderson



(No Model.)

J. WOODWARD 8v R. ANDERSON.

PUMP.

No. 388,943. Patented Sept. 4, 1888.

Urvrrnn Srn'rns Partnr rtree.

JOHN WOODIVARD AND ROBERT ANDERSON, OF OIL SPRINGS, ONTARIO, CANADA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 388,943, dated September 4, 1888.

Application filed April 27, 1387. Serial No. 236,982.

To aZZ whom t may concern:

Be it known that we,JonN WooDWARD and ROBERT ANDERSON, citizens of Canada, residing at Oil Springs, in the county of Lambton and Province of Ontario, Canada, have invented certain new and useful Improvements in Pumps, (for which we have obtained a pat-- ent in Canada, since then improved,NO. 25,551, bearing date December 13, 1886,) of which the following is a specification.

The invention relates particularly to deepwell plunger-pumps; and it consists, iirst, in a loose gravitating sleeve encircling the pistonrod and closing the upper end ofthe barrel,so that it may rise freely from its seat.

It also consists in the peculiar construction and combination ol' parts at the lower end of the barrel, as hereinafter described, and speciied in the claims.

Figurel is a sectional elevation of the pump. Fig. 2 is a plan viewof the steadyingcollar. Fig. 3 is a sectional plan view on line a: w. Figet is aplan ofthe working-barrel seat. Fig. 5 is an enlarged outside view of the plunger.

That part of the pump which is shown in the drawings,and which contains our improven1ents,is, when in use, submerged in the liquid, and is supported by the trunk-pipe of the pump, which reaches down from the groundsurface and is screwed into the top end ofthe shell A, which is simply a piece of plain pipe. B is the working-barrel seat. It is provided with a. central polygonal flange, a, by which it is turned, and both above and below this flange it is screw-threaded, so as to allow of its being screwed both into the bottom end of the shell A and into the top end of the strainer O. The working-barrel D stands in the shelltube A, has its bottom end screwed into the barrel-scat B and its top end steadied by the steadying-collar Ilwhich has the arms b reach ing out against the shell. The pump rod F works through a loose-fitting sleeve, e', which rests on the top of the working-barrel and prevents scales or dirt from entering the Workingbarrel. A ball-valve, G, is fixed in the lower end ofthe working-barrel,and a similar valve, II, is attached to the pump rod F. Vent-holes d" are madein the workingbarrel,near its upper end, for the purpose of allowing the dis- (No model.) Patented in Canada December 13, 1886, No, 25,551.

charge of the oil from the working-barrel without lifting the sleeve c', except under great pressure. ThestrainerCisaplaintubescrewed on the barrel-seat B, as shown in Fig.i,and has its lower end closed. It serves as a depository for any sediment that may be drawn into it. A drop-tube, I, is placed in the strai ner,screwed, as shown, into the barrel-seat B, and extends below the induction-openings e, so that as the oil enters through these openings it isobliged to descend some distance before being drawn into the drop-tube I. rlhis downward current helps to throw any sediment to the bottom of the strainer.

Our improvement in the ball-valves consists in making the shoulder against which the bottom edge of the ball-cage is held movable on the valve-seat pipe g', which may be thereby set at any desired height in the ball-cage h', and the play of the ball increased or dimin ished to suit the kind of work the pump may be required to do.

The valve-ball 'i' rests on the top end of the pipe g,whieh constitutes the valves seat. The cage 7L is screwed on the outside of the pipe g', and is turned down until the inside height of the cage is such that the ball in it will be allowed only the proper amount of vertical play. The lower edge of the cage is brought into close contact with the shoulder or top edge of the collarj,which terminates its downward motion on the pipe g.

In this class of val ves as heretofore made the collar j has been either formed of a piece with or rigidly attached to the valveseat pipe y',

'which necessitated the cutting down of the collar when the lowering of the cage on the pipe g became necessary through the wearing down of the valve-ball sont. Our invention rend ers this cutting down unnecessary by making the collar movable on the pipe. The cage and collar being similarly screwed on the pipe g', may be raised or lowered together or separately, as occasion may require.

We claim as our invention in the above-de scribed pump- 1. The combination, in a pump, of a working-barrel open at the upper end and provided with an outlet below said end, a pump-rod extending into the. barrel from above,and a loose ICO gravitating sleeve embracing' the piston-rod and strainer and over the Workingbarrel and and adapted to move along the same to nordrop-tube, respectively, and secure all said mally close the upper end of said barrel and parte together, substantially as shown and deopen it under abnormal pressure, subsbantiall y scribed. 1 5

as set forth. Signed at Petrolia this 16th day of April,

2. The combination of the shell A, the 1887.

strainer O, Workingbarrel D, drop-tube Land JOHN VOODVARD.

the seat B, this latter having flange a and be- I ROBERT ANDERSON.

ing provided with screw-threads above and bel In presence oflow said flange on its inner and outer faces, JAMES SGHULTZ,

whereby it is adapted to screw` into the shell JAMES CAMERON. 

